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Installing grounding wire
X Grounding must be done by a qualified installer for your safety .
X
X Use the grounding wire by referring to the specification of the electric cable of the outdoor unit .
X
Grounding the power cable
X The standard of grounding may vary according to the rated voltage and installation place of the air conditioner .
X
X Ground the power cable according to the following .
X
Installation place
Power condition
Voltage of lower than 150V
Voltage of higher than 150V
1) Grounding work 3
• Grounding must be done by your installation specialist .
NOTE
• Check if the grounding resistance is lower than 100Ω . When installing a circuit breaker that can cut the electric
circuit within 0 . 5 second in case of a short circuit, the allowable grounding resistance should be 30~500Ω .
2) Grounding at dry place
• The grounding resistance is should be lower than 100Ω . (It should not be higher than 250Ω)
- Use the rated grounding wire by referring to the specification of the electric cable of the outdoor unit .
Performing the grounding work
X Use the grounding wire by referring to the specification of the electric cable for the outdoor unit .
X
When using the terminal for grounding only
High humidity
Perform the grounding work
Must perform the grounding work 3 .
(In case of installing circuit breaker as well)
Earth terminal
Average humidity
3 .
Note 1)
When using grounding of the switch board
Low humidity
Perform the grounding work 3 if
possible for your safety .
Note 2)
Note 1)
Switch Board
35
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